Maintenance70TIP:If the propeller nut slot does not align with thepropeller shaft hole after tightening the pro-peller nut to the specified torque, tighten thenut further to align the slot with the hole.EMU29289Changing gear oilWARNINGEWM00800 Be sure the outboard motor is securelyfastened to the transom or a stablestand. You could be severely injured ifthe outboard motor falls on you. Never get under the lower unit while it istilted, even when the tilt support lever orknob is locked. Severe injury could oc-cur if the outboard motor accidentallyfalls.1. Tilt the outboard motor so that the gear oildrain screw is at the lowest point possi-ble.2. Place a suitable container under the gearcase.3. Remove the gear oil drain screw and gas-ket. NOTICE: If there is an excessivequantity of metal particles on the mag-netic gear oil drain screw, this can in-dicate lower unit problem. Consultyour Yamaha dealer. [ECM01900]TIP: If a magnetic gear oil drain screw isequipped, remove all metal particles fromthe screw before installing it. Always use new gaskets. Do not reuse theremoved gaskets.4. Remove the oil level plug and gasket toallow the oil to drain completely.NOTICE: Check the used gear oil afterit has been drained. If the gear oil ismilky or contains water or a largeamount of metal particles, the gearcase may be damaged. Have aYamaha dealer check and repair theoutboard motor. [ECM00713]TIP:For disposal of used oil, consult your Yamahadealer.5. Put the outboard motor in a vertical posi-tion. Using a flexible or pressurized fillingdevice, inject the gear oil into the gear oildrain screw hole.1. Cotter pin1ZMU069561. Gear oil drain screw2. Oil level plug3. Gasket